NotMuchofaStall
Member
I?m having a time removing AN470 universal head rivets cleanly. I will drill through the head just enough to get a pin punch in there to pop the head off. Usually it works, but every so often the head won?t come off cleanly, and it will leave a little bit of metal around the outside of the hole.
I will try grabbing the little bit of metal with my rivet pliers, or try drilling further down into the rivet, or both (depending on how obstinate it is). The former leads to marring the surface around the hole; the latter seems to lead to damage around the hole because there?s no longer a head to drill into and it?s difficult to see where the rivet shank is. I?m currently waiting for Van's to tell me whether I damaged a hole enough to have to updrill to a -5 rivet.
Does anyone else encounter this or know why this happens? What are your techniques for getting a universal head off cleanly the first time?
I will try grabbing the little bit of metal with my rivet pliers, or try drilling further down into the rivet, or both (depending on how obstinate it is). The former leads to marring the surface around the hole; the latter seems to lead to damage around the hole because there?s no longer a head to drill into and it?s difficult to see where the rivet shank is. I?m currently waiting for Van's to tell me whether I damaged a hole enough to have to updrill to a -5 rivet.
Does anyone else encounter this or know why this happens? What are your techniques for getting a universal head off cleanly the first time?